/*    $OpenBSD: fputwc.c,v 1.4 2009/11/09 00:18:27 kurt Exp $    */
/* $NetBSD: fputwc.c,v 1.3 2003/03/07 07:11:37 tshiozak Exp $ */

/*-
 * Copyright (c)2001 Citrus Project,
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Citrus$
 */

#include "errno.h"
#include "limits.h"
#include "stdio.h"
#include "wchar.h"
#include "local.h"
#include "fvwrite.h"

wint_t
__fputwc_unlock(wchar_t wc, FILE *fp)
{
    struct wchar_io_data *wcio;
    mbstate_t *st;
    size_t size;
    char buf[MB_LEN_MAX];
    struct __suio uio;
    struct __siov iov;

    /* LINTED we don't play with buf */
    iov.iov_base = (void *)buf;
    uio.uio_iov = &iov;
    uio.uio_iovcnt = 1;

    _SET_ORIENTATION(fp, 1);
    wcio = WCIO_GET(fp);
    if (wcio == 0) {
        errno = ENOMEM;
        return WEOF;
    }

    wcio->wcio_ungetwc_inbuf = 0;
    st = &wcio->wcio_mbstate_out;

    size = wcrtomb(buf, wc, st);
    if (size == (size_t)-1) {
        errno = EILSEQ;
        return WEOF;
    }

    uio.uio_resid = iov.iov_len = size;
    if (__sfvwrite(fp, &uio)) {
        return WEOF;
    }

    return (wint_t)wc; /*lint !e571*/
}

wint_t
fputwc(wchar_t wc, FILE *fp)
{
    wint_t r;

    FLOCKFILE(fp);
    r = __fputwc_unlock(wc, fp);
    FUNLOCKFILE(fp);

    return (r);
}

